MS Access does not have an UNPIVOT function which will convert your columns of data into rows but you can use a UNION ALL query:

SELECT 'person1' as IDPerson, color, person1 as activated
FROM yourtable
UNION ALL
SELECT 'person2' as IDPerson, color, person2 as activated
FROM yourtable
UNION ALL
SELECT 'person3' as IDPerson, color, person3 as activated
FROM yourtable